• 专利标题:   Preparation of graphene-coated solid-phase micro-extraction fiber involves washing metal wire with water, cleaning with methanol, silver-plating an end of wire, and placing silver-plated end of wire in 3-mercaptopropyl trimethoxysilane.
  • 专利号:   CN104437441-A, CN104437441-B
  • 发明人:   FENG J, LUO C, SUN M, WANG J, BU Y
  • 专利权人:   UNIV JINAN, UNIV JINAN
  • 国际专利分类:   B01J020/286, B01J020/30, G01N030/56
  • 专利详细信息:   CN104437441-A 25 Mar 2015 B01J-020/286 201550 Pages: 6 Chinese
  • 申请详细信息:   CN104437441-A CN10604924 03 Nov 2014
  • 优先权号:   CN10604924

▎ 摘  要

NOVELTY - A graphene-coated solid-phase micro-extraction fiber is prepared by washing 2-3 cm metal wire with water, cleaning with methanol, placing one end of wire in chemical silver plating solution to deposit silver layer over metal silk, placing silver-plated end of metal wire in 3-mercaptopropyl trimethoxysilane solution, hydrolyzing with diluted hydrochloric acid, taking out, drying, placing in solution of ionic liquid crosslinking agent, removing solvent by evaporation, placing in dispersion of graphene oxide, taking out after heating, and repeating until desired coating thickness is obtained. USE - Preparation of graphene-coated solid-phase micro-extraction fiber. ADVANTAGE - Metal silk fiber as fiber carrier effectively improves shortcomings of quartz fiber carrier which is fragile, improves use life, and increases convenience. Extraction performance is excellent. The use of ionic liquid as crosslinking agent of graphene oxide layers by bonding to metal silk body increases the stability of chemical bond coating by effectively controlling coating thickness.